Effect of BTEX and Ethanol on Biodegradation of MTBE
نویسندگان
چکیده
Methyl-tert-butyl (MTBE) is widely used in gasoline to reduce ozone and carbon monoxide emissions. However, it is highly water-soluble and does not absorb well to sediments, making it move quickly through groundwater systems. In addition, MTBE resists biological degradation, compared to other gasoline components, probably because of the high energy required to cleave its ether bond. The contamination of groundwater and consequent drinking water with MTBE has become an increasing problem due to its potential hazardous to human health.
منابع مشابه
Treatment of MTBE and BTEX at a Local Refinery: Bench and Field Studies
Methyl tert-butyl alcohol (MTBE) is a gasoline additive that is also a common groundwater contaminant because of its high water solubility and the tendency of underground storage tanks to leak. Benzene, toluene, ethylbenzene and xylenes (BTEX) are gasoline components that commonly co-occur with MTBE at the source of a spill. Biodegradation is an attractive treatment option for MTBE, however, tw...
متن کاملMethyl tert-butyl ether (MTBE) degradation by a microbial consortium.
The widespread use of methyl tert-butyl ether (MTBE) as a gasoline additive has resulted in a large number of cases of groundwater contamination. Bioremediation is often proposed as the most promising alternative after treatment. However, MTBE biodegradation appears to be quite different from the biodegradation of usual gasoline contaminants such as benzene, toluene, ethyl benzene and xylene (B...
متن کاملHydrochemical and isotopic effects associated with petroleum fuel biodegradation pathways in a chalk aquifer.
Hydrochemical data, compound specific carbon isotope analysis and isotopic enrichment trends in dissolved hydrocarbons and residual electron acceptors have been used to deduce BTEX and MTBE degradation pathways in a fractured chalk aquifer. BTEX compounds are mineralised sequentially within specific redox environments, with changes in electron acceptor utilisation being defined by the exhaustio...
متن کاملAerobic Biotransformation of Gasoline Aromatics in MultiComponent Mixtures
The primary objective of this study was to evaluate the impact of substrate interactions on the biotransformation rates and mineralization potentials of gasoline monoaromatics and methyl tert-butyl ether (MTBE), compounds that commonly co-exist in groundwater contaminant plumes. A mixed culture was derived from gasoline-contaminated aquifer material using toluene as the enrichment substrate. Tw...
متن کاملAerobic Biotransformation of Gasoline Aromatics in Mulitcomponent Mixtures
The primary objective of this study was to evaluate the impact of substrate interactions on the biotransformation rates and mineralization potentials of gasoline monoaromatics and methyl tert-butyl ether (MTBE), compounds that commonly co-exist in groundwater contaminant plumes. A mixed culture was derived from gasoline-contaminated aquifer material using toluene as the enrichment substrate. Tw...
متن کامل